A Scheme to Counter SSDF Attacks based on Hard Decision in Cognitive Radio Networks

摘要

Cognitive radio is a promising technology to improve the utilization of wireless spectrum resources. A serious threat to cognitive radio networks (CRN) which sense the spectrum in a cooperative manner is the transmission of false spectrum sensing data by malicious secondary nodes, namely spectrum sensing data falsification (SSDF) attacks. SSDF attackers start to attack the network in the case of independent attacks or cooperative attacks and impair the process of data fusion, the performance is deteriorated. In this paper, we propose a scheme that can mitigate the effect of SSDF attacks and improve the robustness of cooperative spectrum sensing (CSS) based on hard decision regardless of independent attacks or cooperative attacks. Simulations verify the effectiveness of the proposed scheme.